Resurfacing mechanism.



J. B. HADAWAY.

RESURFACING MECHANISM.

APPLICATION FILED AUG.3I. 1912..

Patented Nov. 30, 1915.

Z SHEETS-SHEET 1- 14 km A Fig. 2.

COLUMBIA PLANOGIIAEH CD WASHING-KIN. D. C.

WT/VESSES. a %M J. B. HADAWAY.

RESURFACING MECHANISM.

APPLICATION FILED AUG.3I. 1912.

l 1 61 ,857, Patented Nov. 30, 1915.

2 SHEETS-SHEET Z- D sTATE rATnn'r orricn.

JOHN HADAWAY, or swei/rrsoor'r, vressnonnsn rrs, nssienon r0 NIT snon MACHI ERY MEA or B EBSO NEW JERSEY, a GQBts-QBAT QN O N JERSEY.

a svsra m MECHANISM.-

Patented Nov. 30, 191 5.

Application filed August 31, 1912.. Serial No. 718,113.

To all whom it may concern:

Be it known that 1, JOHN BLYHADAWAY, arcitizen, of the United States, residing at Swampscott, in the county of Essex and State of Massachusetts, have invented certain Improvements in Resurfacing Mechanisms, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts inthe several figures. J

This invention relates to devices for. resurfacing cutting blocks and particularly to devices which can be attached to and utilize certain movements of, the parts of a cutting machine in which the block is to be used, whereby the block may easily be re surfaced without removing it from the ma chine.

In its illustrated embodiment the invention is shown as applied to the clicking ma chine. It willbe understood, however, that, although the invention is primarily directed to the peculiar resurfacing problems pre sented by the clicking machine, the invention is not restricted to the illustrated uses nor to the particular embodiment shown.

It has been proposed, andit has proved to be practicable within certain limits, to re the first place, the presser member andthe parts connected with it have considerable weight and therefore considerable inertia,

and in order to swing the presser member back and forth over the whole length of the block the operator must expend considerable energy, even when he is not; overcoming the resistance offered by. the engagement of the resurfacing tool with the block. Moreover, in order to provide for the movement of the resurfacing tool across the block, it has been necessary to embody considerable mechanism inthese resurfacing attachments and the resurfacing attachment itself has therefore added considerably to the weight of the swinging member and its connected parts and has therefore increased the inertia which the operator mu t overcome; Another object-ionwhich the operators have :made to these resurfacing, attachments is that it requires considerable time to place them upon the presser member and remove them from the presser member owing to the necessity for adjusting them properly, and that it also requires considerable work in view of the comparatively heavy weight of these attachments. In a large majority of cases, therefore, the operators have preferred to resurface the blocks by hand tools so long as this can be done and then to remove the block from the machine and have it leveled up in aplaning machine.

An object of the present invention is to provide, a resurfacing attachment which can be attached to theswinging presser'member of the clicking ma'chineor other simi' lar cutting machine and which will avoid the most of the objections which the operators have made to other resurfacing attachments. To this end it is proposed to arrange the resurfacing attachment so that it may be operated along the short dimension of the block, that it shall receive only its move illent of adjustment from the swinging memher while its operative movement shall be independentof any movement of the swinging member, and that it shall operate in both directions whereby the block may be resurfaced morc quickly and any wasted movements' avoided.

Other objects and novel features of the invention will be apparent when the following description and claims are read inconnection with the accompanying drawings, in which,, i V

- Figure 1 is a perspective view of a portion of the clicking machine having the invention applied thereto; Fig. 2 is a section through the cutter carrying arm of the resurfacing mechanism in the region of the cutters; Fig. 8 is a plan view of the resurfacing mechanism, the position of this mechanism upon the presser member being shown in this figure by drawing in the presser member in dotted lines; Fig. t is a detail section lengthwise of the cutter carrying arm, showing the manner of mounting the cuttersin the arm and Fig. 5 shows a roughing cutter opposed to a smoothing cutter.

Only so much of the clicking machine is shown in the drawings as is required for illustration of the purposes and mode of operation of the invention. For a more com: plete description of the relationship of the i so.

different elements of the clicking machine and their mode of operation, reference may be had to United States Letters Patent to ArthurBates-No. 921,503, May 11, 1909, for improvements in machines for cutting out thin sheet material such as upper leather for boots and shoes.

The resurfacing'mechanism is mounted upon the presser member 20f the clicking machine, which is arranged to swing into different operative positions over a cutting block 4, the presser member being clamped to a post orplunger 6 mounted in vertical bearings atone side of the cutting block, with provision for both oscillating and re ciprocating movement in said bearings. Inasmuch as the presser member 2 swings over the block 4 into operative position over any part of the block, advantage is taken of this movement of the presser member to effect the adjustment of the resurfacing mecha nism into its different operative positions whereby the entire surface of the block can be progressively resurfaced.

In order to make the resurfacing operation as easy as possible, the cutting stroke of the resurfacing mechanism is preferably along the shorter dimension of the rectangular. surface of the block. To provide for such a cutting movement, the cutting tools 8 and 10, there being preferably two of these tools arranged to operate in opposite directions, are carried upon an arm 12 pivoted at 14'upon a comparatively long extension 16 of a bracket or support 18 clamped upon the presser member 2. The means for clamping the bracket or support 18 upon the presser member are preferably so arranged that the bracket can slide lengthwise of the flanges 20 of the presser member into operative position upon said member, two: hook-like members or lugs 22 being arranged upon the bracket or support to engage the flange upon one side of the presser member, and set screws 24 being threaded into overhanging lugs 26 upon the bracket to engage the flange upon the other side of the presser member. Another overhanging lug 28, provided with a set screw 30, serves both to help support the front end of the bracket and to furnish a stop which contacts against the end of the presser member to locate the bracket upon said member.

The cutter carrying arm 12 is provided with a shoulder 32 which is formed upon the arc of a circle having its center at the pivot 14 and'this-shoulder serves to guide the arm along an edge 34 of the bracket or support 18 which is also formed upon the arc of a circle having its center at the pivot 14.

The bracket 18 is of sufiicient extent at the edge 34 so that the arm 12 can swing entirely across the block in all positions of the presser member over the block. To support the arm at its end remote from thepivot 14,

a plate 36 is clamped upon said arm to over" hang the shoulder 32, this plate being provided with a concave edge formed upon the arc ofa circle having its center at the pivot I shanks 40, 42 which are received in sockets in pendent arms 44 and 46 pivoted upon a bracket 48 bolted to the upper side of the arm 12. The knives are confined in the sockets by set screws 52. The pendent arms 44 and 46 are located in an opening 54 in the arm 12 and are normally pressed apart by a spring 56 into engagement with opposite walls of said opening. The said walls of theopening 54 serve to support the pendent arms against the resistance of the block to the cutting action of the cutters. It will be noted, however, that only one cutter is supported at a time, the cutting edges of the cutters, as above pointed out, being opposed to each other so that one cutter acts during the movement of the arm in one direction and the other cutter acts during the move ment of the arm in the other direction, the cutter which is not acting being drawn away from its supporting wall somewhat by reason of its frictional engagement with the block, the spring 56 permitting this movement. The cutters are supported uponadjustable pivots 58, 60 which are shouldered to provide reduced threaded extensions located in slots 62 and 64 in the bracket 48 whereby the cutters may be adjusted toward and away from the block or up and down in the opening 54. Nuts upon the threaded reduced extensions draw the shoulders against the face of the bracket 48 and confine the pivots in their different positions of adjustment.

To resist the end thrust upon the cutters, screws 66 and 68 are threaded into the upper edge of the bracket 48 andbear against the reduced extensions 58 and 60 in the slots 62 and 64. To lock the arm 12 against swinging movement on the bracket or support 18, a pin 70'is provided which can be thrust through holes in the arm 12 and the bracket 18 when said holes are brought into register.

To aid the operator in holding the presser member 2 in its different positions of adj ustment, a frictional resistance is provided in the form of two brake shoes 7 2, 74 which engage the post or plunger 6 and which are provided witharms 76 and 78 which may be clamped by means of a clamping bolt 80 upon the flanges 82, 84 of the machine frame. A pivoted handle 86 upon the clamping bolt provides for quickly applying the brake shoes to'thepost or plunger 6. For convenience in swinging the presser member into its different positions of adjustment, a handle '88 is provided upon the bracket 18 and an arm 90 extending from said handle and provided with a forked'end which may be located below the starting handle 92 serves to prevent the actuation of the clicking machine While the resurfacing attachment is upon the presser member.

It will be noted that the two cutters 8 and 10, shown in the preferred embodiment of 'the invention, are both smoothing cutters.

It is contemplated, however, using a combination of cutters comprising a roughing cutter which will act to quickly lower the surfaceof the block as the arm 12 moves in one direction over the block, and a smoothing cutter which will finish the surface of the block as the, arm returns over the same path. When the block does notrequire extensive resurfacing operations, the combination of the two smoothing cutters shown in the preferred embodiment is preferable. When, however, the block is very irregular in shape it will sometimes be found advantageous to use the combination comprising a roughing cutter and a smoothing cutter. Both combinations are considered to be within the scope of the invention.

In Fig. 5 is shown the combination of a roughing cutter and a smoothing cutter, the roughing cutter 9i being formed with corrugati'ons 96 on its under side so that its teeth may be sharpened bysimply grinding back the bevel 98 at the front edge of the cutter.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. In a machine of the class described,

comprising a cutting block and a presser member arranged to move over said block into different operative positions, resurfacing means carried by said presser member, having its operative movement to and fro across the block in a different direction from that of the movement of said presser member over the block and receiving its movement of adjustment from said member.

2. Ina machine of the class described, comprising a cutting block and a presser member arranged to swing into different operative positions over said bloclnresurfacing means having its operative movement to and fro across the block in a different direction from that of the swinging movement of said presser member.

3. In a machine of the class described,

comprising a cutting block and a presser member arranged to swing into different operative positions over said block, resurfacing means carried by said presser mem her, having its operative movement to and fro across the block in a diflere'nt direction from that of the swinging movement of said member and receiving its movement of ad justment from said member.

4. In a machine of the class described,

comprising. a-cutting block and a presser member arrangedto swing abouta vertical axis: at one side of said block into different operative positions over said block, resurfacing means carried by said presser member and arranged to swing with said presser member into different positions of adjustment and to swing at an angle to the path of swinging movement of said presser member toeffect the resurfacing operation.

5. In a machine of the class described, comprising a cutting block and a presser member arranged to swing into different operative positions over said block, resursubstantially midway between its ends, re-

surfacing means carried by said presser member and arranged to swing about another axis adjustable along a path which is located between the sides of said block where it crosses the block. 1

7. A machine'of the class described, comprising a cutting block and a presser member arranged to' swing into operative positions over different parts of said block, re-

surfacing means carried by said member and having its operative movement across said block at an angle to the swinging movement's-f saidqpresser member, said resurfacing means comprising two cutters one of which automatically comes into operation as said means moves in one direction across the block and the other of which automatically comes into operation as said means moves inthe other direction across the block.

8. A' machine of the class described, comprising a cutting block and a presser member arranged to swing into difierent operative relations to the block,resurfacing means carried by said presser member and receiving its movement of adjustment from the swinging movement of said member and having itsoperative movement to and fro across the block inv a different direction from that of the swinging movement of said member, and means for frictionally maintaining said member in its different positions of adjustment.

9. In a machine of the class described, comprising a cutting block and a presser member arranged to swing about a fixed axis into different operative relations to said block, resurfacing mechanism carried by arc-shaped cuts, the centers of said said member and arranged to swing to and fro about an axis movable with said member and located upon the side of said member remote from that upon which the block engaging portion of said mechanism is locutters being so mounted upon said member that they are alternately moved into inoper ative position by engagement with the block assaid member moves acrossthe block.

11. Resurfacing mechanism for cutting blocks comprising a, cutter carrylng member and opposed cutters carried by said member, each of said cutters receiving positive sup port from said member while moving in the operative direction and yielding support while moving inthe inoperative direction.

12. Resurfacing mechanism for cutting blocks comprising a pair of opposed cutters, a cutter carrying member arranged ,to move said cutters to and fro,pendent supports for said cutters pivoted upon said member, and means foryieldingly maintaining said out ters in a determined relation to each other constructed to permit said cutters to become alternately inoperative.

13. Resurfacing mechanism for cutting blocks comprising a roughing cutter and a smoothing cutter, means for operating said cutters arranged to cause them to operate in succession across the block, and means for supporting said operating means adjustable to carry said mechanism bodily along an-- other dimension of the block.

14. Resurfacing mechanism for cutting blocks comprising a roughing cutter and a smoothing cutter and means for moving said cutters to and fro across the block, said cutters being arranged so that said means causes said roughing cutter to operate dur-.

ing the movement in one direction and said smoothing cutter to operate over the same surface during the movement in the other direction.

15. Resurfacing mechanism for cutting blockscomprising a cutter carrying member arranged to move to and fro and alternately operative opposed cutters carried by said ranged to swing about a pivot relatively remote from the cutter and having a handle to be grasped by the operator so arranged with respect to said cutter that said arm constitutes a lever of the second class, a support for said arm and pivot, and means for adjusting said resurfacing mechanism over the block to be resurfaced to bringit into different operative relations to the block.

18. In a machine of the class described comprising a cutting block and a presser member arranged to move over said block into different operative positlons, resurfacing mechanism carried by said presser member and comprising a cutter carrying arm arranged to swing about a pivot located upon the side of said presser member remote from that upon which the cutter 1s lo cated, saidarm being arranged to have 1ts operative movement at an angle to the direction of movement of said presser member over the block.

19. In a machine ofthe class described comprising a cutting blockand a presser member, detachable resurfacing means constructed to be supported by said presser member and arranged to swing upon its support upon said presser member to and fro across the block to effect the resurfacing op eration, provision being made for bodily adjustment of said resurfacing means along another dimension of said block whereby the whole surface of said block may be resurfaced. I

In testimony. whereof I have signed my name to this specification inthe presence of two subscribing witnesses.

JOHN HADAWAY.

YVitnesses: v

NORM N C. HUssnY, H. DORSEY SPENCER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

